Troubleshooting
118
AC1900 Cable Modem Voice Router
Changes Not Saved
If the modem router does not save the changes you make in the modem router interface,
check the following:
• When entering configuration settings, always click the Apply button before moving to
another page or tab, or your changes are lost.
• Click the Refresh or Reload button in the web browser. It is possible that the changes
occurred, but the old settings are in the web browser’s cache.
WiFi Connectivity
If you are experiencing trouble connecting to the modem router with WiFi, try to isolate the
problem:
• The computer or WiFi device that you are using does not find the WiFi network.
This can happen for the following reasons:
- Someone pressed the WiFi On/Off button on the modem router, which turned off the
WiFi radios.
Check the 2.4 GHz and 5 GHz LEDs on the front of the modem router. If they are off,
press the WiFi On/Off button to turn the WiFi radios back on.
- Someone logged in to the modem router and disabled its WiFi radios or set up a WiFi
schedule.
In this case, pressing the WiFi On/Off button does not turn the WiFi radios back on.
You must log in to enable the WiFi radios. Use an Ethernet cable for a wired
connection to the modem router. Then log in and change the settings. For more
information, see
Control the WiFi Radios on page 83.
- Someone logged in to the modem router and disabled its SSID broadcast. Your WiFi
network is hidden and does not display in your WiFi client’s scanning list. (By default,
SSID broadcast is enabled.)
To connect with WiFi, you must type the network SSID and password. For information
about how to enable the SSID broadcast, see
Specify Basic WiFi Settings on
page 79.
• You can find the WiFi network, but you can’t connect. Check the following:
- Make sure that your computer or WiFi device supports the security that you are using
for your WiFI network (WPA or WPA2),
- Make sure that you are using the correct WiFi password.
The preset WiFi password is on the modem router label. If you changed it and do not
remember the new password, you can use a wired Ethernet connection to log in to the
modem router and view or change the WiFi password. For more information, see
Change the WiFi Security Option on page 81.
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